hi every one,
i have a ROW device and i am so excited to update to ICS,
but i cannot update via OTA, it said "Update fail Please press home button to reboot",
then i download the zip file from lenovo and try to install manually,

Unfortunately, i cannot update with an error message:
assert failed: apply_patch_check("/system/build.prop", "9849c6093fd22d4b664f077765d75bd046527450", "2f0e08e9e0e7b80b94ce941193a569c61ff00463")
E: Error in /tmp/sideload/package.zip
(Status 7)
I havent change the build.prop, does anyone can send me the original "ThinkPadTablet_A310_02_0039_0089_ROW"
build.prop file to uykyben@gmail.com? or any idea to update the device?
Many thanks.
BR,
Ben

TPT information:
Android version: 3.1
Kernal version: 2.6.36.3 build@build-desktop #1
Build number: ThinkPadTablet_A310_02_0039_0089_ROW

My build.prop file
# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=ThinkPadTablet_A310_02
ro.build.display.id=ThinkPadTablet_A310_02_0039_0089_ROW
ro.build.version.incremental=0039_0089_ROW
ro.build.version.sdk=12
ro.build.version.codename=REL
ro.build.version.release=3.1
ro.build.date=Fri Mar  2 15:30:13 CST 2012
ro.build.date.utc=1330673413
ro.build.type=user
ro.build.user=build
ro.build.host=build-desktop
ro.build.tags=release-keys
ro.product.model=ThinkPad Tablet
ro.product.brand=Lenovo
ro.product.name=ThinkPadTablet
ro.product.device=Indigo
ro.product.board=ventana
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=Lenovo
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=tegra
# ro.build.product is obsolete; use ro.product.device
ro.build.product=Indigo
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=ventana-user 3.1 ThinkPadTablet_A310_02 0039_0089_ROW release-keys
ro.build.fingerprint=Lenovo/ThinkPadTablet/Indigo:3.1/ThinkPadTablet_A310_02/0039_0089_ROW:user/release-keys
ro.build.characteristics=tablet
ro.product.input.defaultpkg=com.nuance.flext9_OEM.input
# end build properties
ro.opengles.version = 131072
wifi.interface=wlan0
service.mtp.defult_lock=true
keyguard.no_require_sim=1

#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.setupwizard.mode=DISABLED
ro.com.google.gmsversion=3.1_r2
ro.config.notification_sound=OnTheHunt.ogg
ro.config.alarm_alert=Alarm_Classic.ogg
ro.com.google.clientidbase=android-lenovo
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=256m
dalvik.vm.dexopt-flags=m=y
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt

ro.sf.lcd_density=160


Edit the updater-script in the zip (META-INF/com/google/android/)

Remove this line:

assert(file_getprop("/system/build.prop", "ro.build.fingerprint") == "Lenovo/ThinkPadTablet/Indigo:3.1/ThinkPadTablet_A310_02/0039_0089_ROW:user/release-keys" ||
       file_getprop("/system/build.prop", "ro.build.fingerprint") == "Lenovo/ThinkPadTablet/Indigo:4.0.3/ThinkPadTablet_A400_03/0069_0121_ROW:user/release-keys");

It will update but you will lose CWM, don't reinstall CWM yet it's not compatible with ics, wait for an updated version.

Edit the updater-script in the zip (META-INF/com/google/android/)

Remove this line:

assert(file_getprop("/system/build.prop", "ro.build.fingerprint") == "Lenovo/ThinkPadTablet/Indigo:3.1/ThinkPadTablet_A310_02/0039_0089_ROW:user/release-keys" ||
       file_getprop("/system/build.prop", "ro.build.fingerprint") == "Lenovo/ThinkPadTablet/Indigo:4.0.3/ThinkPadTablet_A400_03/0069_0121_ROW:user/release-keys");

It will update but you will lose CWM, don't reinstall CWM yet it's not compatible with ics, wait for an updated version.

Hi,
I did as you said. But it encounter another problem:
Failed to verify whole-file signature
and installation aborted again.

Have you meet this question before? thanks!